@mixin margin-bottom($key) {
    margin-bottom: map-get($map, $key);
}

@media (max-width: 480px) {
    .bd-examples {
        margin-right: -0.75rem;
        margin-left: -0.75rem;
    }

    .bd-examples > [class^='col-'] {
        padding-right: 0.75rem;
        padding-left: 0.75rem;
    }
}

.mb4 {
    @include margin-bottom(4);
}
